Anxiety, stress, depression. My problem.

I have been feeling very low mentally and emotionally both. I often cry after watching television, whatever the show be. I also cry thinking about my past experiences. I feel anxious all the time. I don't feel happy, but always live with a feeling of guilt. I face problem in socialising and cannot mix with people easily.I have lost interest in my hobbies.I like to be alone most of the time.I talk very less and I get irritated while talking to others.Sometimes I get hyper and violent when I m angry with my loved ones.I cannot control my emotions and feelings.Earlier I never used to be jealous of anyone but gradually negative feelings like jealousy, thought of causing self harm and breaking relationships at even small reasons, have started coming to my mind.I feel I can't make firm decisions and I am most of the time confused.I am not able to think rationally and react very soon to any adverse situation.I have started keeping myself aloof from others. Plz diagnose my problem.